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Network management Toolkit

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CUBIC: A New TCP-Friendly High-Speed TCP Variant

PublisherNorth Carolina State University
Format327.4KB PDFDate added17 Feb 2007
Topics TCP - IP
Downloads1

This paper presents a new TCP variant, called CUBIC, for high-speed network environments. CUBIC is an enhanced version of BIC: it simplifies the BIC window control and improves its TCP-friendliness and RTT-fairness. The window growth function of CUBIC is governed by a cubic function in terms of the elapsed time since the last loss event. Experience indicates that the cubic function provides a good stability and scalability. Furthermore, the real-time nature of the protocol keeps the window growth rate independent of RTT, which keeps the protocol TCP friendly under both short and long RTT paths.

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